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1according to the two utility functions we can derive the contract curve,namely :y1=db(1-a)x1/(b(1-a)x1 +(c-x1)a(1-b)),here c and d denotes endowment b=β.then ,assume y1>d/c x1,we can get the condition :b>a ,the rest can be deduced by the same analogy 2,because the parameter b reflects the preference of the agent 2,when b>a,it means that the agent 2 attaches more importance to x than the agent 1.
3,4,5,: due to the endowment point we can get the income identity :p1x1+ p2y1=p1c p1x2+ p2y2=p2d. according to consumers' equilibrium condition: ay1/(1-a)x1=by2/(1-b)x2=p1/p2, finally we can obtain the outcome:x1=ac y1=db x2=(1-a)c y2=(1-b)d p1/p2= (1-a)c/bd. we only get the price ratio without more concrete conditions, but when p1=p p2=1-p , the precise answer will emerge . given the endowment point and the utility function ,the equilibrium (if exists) is certain.
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